fix: show preparation state in insight heading

src/lib/components/AIInsightPanel.svelte

@@ -104,7 +104,7 @@
     <Card class="rounded-lg border-dashed">
       <CardContent class="flex flex-col gap-4 p-5 sm:flex-row sm:items-center sm:justify-between">
         <div>
-          <strong>خلاصه هوشمند</strong>
+          <strong>{refreshing ? 'در حال آماده‌سازی خلاصه‌ی هوشمند...' : 'خلاصه هوشمند'}</strong>
           <div class="text-muted-foreground mt-1 text-sm" role="status">{error}</div>
         </div>
         <Button variant="outline" onclick={refresh} disabled={refreshing}>